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12
TROUBLESHOOTING
Confirmation and check
When a trouble occurred in the air conditioner, the check
code and the indoor unit No. appear on the display part
of the remote controller.
The check code is only displayed during the operation.
If the display disappears, operate the air conditioner
according to the following “Confirmation of error history”
for confirmation.
Confirmation of error history
When a trouble occurred on the air conditioner, the error
history can be confirmed with the following procedure.
(The error history is stored in memory up to 4 errors.)
This history can be confirmed from either operating
status or stop status.
CODE No.
UNIT No.
R.C.
No.
Check code
Indoor unit No. in which
an error occurred
3
2
1
ON / OFF
FAN
TEMP.
SWING/FIX
TIME
MODE
VENT
UNIT
SET
CL
FILTER
RESET TEST
TIMER SET
Check method
On the remote controller (Main remote controller, Central control remote controller) and the interface P.C. board of the
outdoor unit (I/F), a check display LCD (Remote controller) or 7-segment display (on the outdoor interface P.C. board) to
display the operation is provided.
Therefore the operation status can be known. Using this self-diagnosis function, a trouble or position with error of the air
conditioner can be found as shown in the table below.
Check code list
The following list shows each check code. Find the check contents from the list according to part to be checked.
• In case of check from indoor remote controller: See “Main remote controller display” in the list.
• In case of check from outdoor unit: See “Outdoor 7-segment display” in the list.
• In case of check from indoor unit with wireless remote controller: See “Sensor block display of receiving unit” in the list.
Procedure
1
2
3
Description
When pushing [SET] and
TEST
buttons simultaneously for 4 seconds or
more, the right display appears.
If [Service Check] is displayed, the mode enters in the error history
mode.
• [01: Order of error history] is displayed in CODE No. window.
• [Check Code] is displayed in CHECK window.
• [Indoor unit address in which an error occurred] is displayed in
UNIT No.
Every pushing
TEMP.
buttons, the error history stored in the memory is displayed in order.
The numbers in CODE No. indicates CODE No. [01] (Latest)
→
[04] (Oldest).
CAUTION
Do not push
CL
button because all the error history of the indoor unit will be deleted.
After confirmation, push
TEST
button to return to the usual display.
UNIT No.
CODE No.
R.C.
No.
